#include "apue.h"
#include <sys/wait.h>

static void sig_int(int);

int main(void) {
    char    buf[MAXLINE];
    pid_t   pid;
    int     status;

    if (signal(SIGINT, sig_int) == SIG_ERR) {
        err_sys("signal Error");
    }
    printf("%% ");
    while (fgets(buf, MAXLINE, stdin) != NULL) {
        if (buf[strlen(buf) - 1] == '\n') {
            buf[strlen(buf) - 1] = 0;
        }
        if ((pid = fork()) < 0) {
            err_sys("fork Error");
        } else if (pid == 0) {
            execlp(buf, buf, (char *)0);
            err_ret("Could't execute: %s", buf);
            exit(127);
        }
        if ((pid = waitpid(pid, &status, 0)) < 0) {
            err_sys("waitpid Error");
        }
        printf("%% ");
    }
    exit(0);
}

void sig_int(int signo) {
    printf("\nInterrupt\n%% ");
}